TOUCH SCREEN DISPLAY DEVICE

• US 20090303193A1
• Filed: 11/17/2008
• Published: 12/10/2009
• Est. Priority Date: 06/09/2008
• Status: Abandoned Application

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: SON, Sun-Kyu, LIM, Myong-Bin
• Application Number:
  US12/272,634
• Publication Number:
  US 20090303193A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires

Abstract

In accordance with one or more embodiments of the present disclosure, a touch screen display device includes a touch screen display panel, a first integrated circuit (IC) chip, and a second IC chip. The touch screen display panel includes a plurality of gate lines, a plurality of data lines, a plurality of pixels, a plurality of first sensing lines, a plurality of second sensing lines, and a plurality of touch sensors. The first IC chip includes a gate driver which transmits a plurality of gate signals to the gate lines, respectively, and a first read-out unit which receives respective output signals of the first sensing lines. The second IC chip includes a data driver which applies a plurality of image data voltages to the data lines, respectively, and a second read-out unit which receives respective output signals of the second sensing lines.

Claims

1. A touch screen display device comprising:

a touch screen display panel comprising a plurality of gate lines that extend in a first direction, a plurality of data lines that extend in a second direction, a plurality of pixels, a plurality of first sensing lines that extend substantially parallel to the first direction, a plurality of second sensing lines that extend substantially parallel to the second direction, and a plurality of touch sensors;

a first driver comprising a gate driver that transmits a plurality of gate signals to the gate lines, respectively, and a first read-out unit that receives respective output signals of the first sensing lines; and

a second driver comprising a data driver which applies a plurality of image data voltages to the data lines, respectively, and a second read-out unit that receives respective output signals of the second sensing lines.

2. The device of claim 1, wherein the first driver comprises a plurality of pins from which the gate signals are output and a plurality of pins to which the output signals of the first sensing lines are input, and wherein the pins from which the gate signals are output and the pins to which the output signals of the first sensing lines are input are alternately arranged.

3. The device of claim 1, wherein the second driver comprises a plurality of pins from which the image data voltages are output and a plurality of pins to which the output signals of the second sensing lines are input, and wherein the image data voltages are divided into a red image data voltage, a green image data voltage and a blue image data voltage, and three pins from which the red image data voltage, the green image data voltage and the blue image data voltage are output and a pin to which the output signals of the second sensing lines are input are alternately arranged.

4. The device of claim 1, wherein the gate driver and the first read-out unit are driven independently, and the data driver and the second read-out unit are driven independently.

5. The device of claim 1, wherein each of the touch sensors comprises a switching device adapted to be turned on by an external touch.

6. The device of claim 1, wherein, when any one of the touch sensors, which are connected to the first and second sensing lines, respectively, is turned on by an external touch, output signals of first and second sensing lines, which are connected to the turned-on touch sensor, transit from a first voltage level to a second voltage level.

7. The device of claim 1, wherein each of the first and second read-out units comprises a comparator that converts the output signals of the first and second sensing lines into digital data which is logic high or logic low.

8. The device of claim 1, wherein each of the first and second read-out units comprises a comparator that compares a reference voltage with the output signals of the first and second sensing lines, and wherein the reference voltage is adapted to be externally controlled.

9. The device of claim 1, further comprising a reset device connected to a node connected to the first and second read-out units and the first and second sensing lines and discharges electric charges from the first and second sensing lines.

10. The device of claim 9, wherein each of the first and second read-out units initiates a read-out operation in response to a loading signal, and the reset device operates before the read-out operation.

11. The device of claim 1, wherein each of the first and second read-out units comprises a level detector that converts the output signals of the first and second sensing lines into digital data, which is logic high or logic low, and outputs the digital data which is logic high or logic low.

12. The device of claim 11, wherein each of the first and second read-out units comprises a shift register adapted to sequentially output the digital data.

13. A touch screen display device comprising:

a touch screen display panel comprising a plurality of gate lines that extend in a first direction, a plurality of data lines that extend in a second direction, a plurality of pixels, a plurality of first sensing lines that extend substantially parallel to the first direction, a plurality of second sensing lines that extend substantially parallel to the second direction, a plurality of touch sensors, and a gate driver that transmits the gate signals to the gate lines, respectively;

a first driver comprising a first read-out unit that receives respective output signals of the first sensing lines; and

a second driver comprising a data driver that applies a plurality of image data voltages to the data lines, respectively, and a second read-out unit which receives respective output signals of the second sensing lines.

14. The device of claim 13, wherein the second driver comprises a plurality of pins from which the image data voltages are output and a plurality of pins to which the output signals of the second sensing lines are input, and wherein the image data voltages are divided into a red image data voltage, a green image data voltage and a blue image data voltage, and three pins from which the red image data voltage, the green image data voltage and the blue image data voltage are output and a pin to which the output signals of the second sensing lines are input are alternately arranged.

15. The device of claim 13, wherein the data driver and the second read-out unit are driven independently.

16. The device of claim 13, wherein each of the touch sensors comprises a switching device that is adapted to be turned on by an external touch.

17. The device of claim 13, wherein, when any one of the touch sensors, which are connected to the first and second sensing lines, respectively, is turned on by an external touch, output signals of first and second sensing lines, which are connected to the turned-on touch sensor, transit from a first voltage level to a second voltage level.

18. The device of claim 13, wherein each of the first and second read-out units comprises a comparator that converts the output signals of the first and second sensing lines into digital data which is logic high or logic low.

19. The device of claim 13, wherein each of the first and second read-out units comprises a comparator that compares a reference voltage with the output signals of the first and second sensing lines, and the reference voltage is adapted to be externally controlled.

20. The device of claim 13, further comprising a reset device that is connected to a node connected to the first and second read-out units and the first and second sensing lines and discharges electric charges from the first and second sensing lines.